A car accelerates from 20 m/s to 80 m/s in 5 seconds. What is the average acceleration of the car?
a 20 m/s2
b 12 m/s2
C 4 m/
d 16 m/s2

Acube has a volume of 2011 cubic inches. what is the angle measure between a side of a cube and its interior diagonal?

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90